Hydrocarbon-lamp.



T. J. CROOK.

HYDROCARBON LAMP. APPLICATION FILED JAN. 15. I916. RENEWED APR. 18,1917- 1,228,379. P Patented" May 29, 1917.

THOMAS JEFFERSON CBOOK, 0F WICHITA, KANSAS.

HYDROCARBON-LAMP.

Specification of Letters Patent.

Patented May 29, 1917.

Application filed January 15, 1916, Serial No. 72,222. Renewed April 18, 1917. Serial No. 163,037.

T0 at whom it may concern:

Be it known that I, Tar-roams J. Cnoox, a citizen of the United States, residing at lVichita, in the county of Sedgwick and State of Kansas, have invented certain new and useful Improvements in Hydrocarbon- Lamps, of which the following is a specification.

My invention relates to hydrocarbon lamps of the inverted type.

The object of the invention is to provide a lamp of the type specified in which means are devised for an absolutely thorough n1ix ing of the hydrocarbon vapor and air for the purpose of :lacilitating combustion and increasing the luminosity of the mantles with the utilization of the minimum amount of fuel.

In the drawings:

Figure l is a perspective view of the complete lamp.

Fig. 2 is a vertical sectional elevation oi the same, the supplemental cover being shown in raised position in dotted lines.

Fig. 3 is a transverse sectional view taken along line 33 of Fig. 2.

Referring more specifically to the drawings, 1 represents the hydrocarbon reservoir provided with a valve 2 for supplying the required pressure thereto, and having a supplemental cover 3 slidably mounted on the handle 4. The handle is secured to the top of the reservoir and partially envelops a vertical tube 5 having its lower extremity lying within the reservoir and its upper extremity fashioned into a retort or vaporiz- :ing chamber 6. The length of the tube is intercepted at a point adjacent its lower extremity by a suitable controlling valve '7.

It will be seen that the upper terminal of the retort 6 is provided with a restricted opening 8 with its exterior portion carrying a nipple 9, which has a still smaller restrict ed opening 10 and is constructed with a boss 11 upon which the mixing chamber or tube 12 rests. The connection at this point is a frictional one, suiliciently reliable to prevent the escape of the vapor and at the same time permitting the entire organiza tion associated with the mixing chamber to be readily detached when the occasion requires. It will also be seen that the restricted portions 8 and 10 combined with the intermediate larger portion of the nipple 9, nniee a substantially contrae turi shaped extremity, the walls of the nipple being convex in contradistinction to concave.

As will be found upon inspection of F ig. 2, the mixing tube is venturi shaped, havmg instruck or inwardly bowed side walls 13 producing relatively large spaces at its opposite ends with an intermediate contracted opening. The air enters through the depending pipe 14 to the lower part of the mixing tube, as at 15. This mixing tube is formed as an integral part of a substantially oval. shaped chamber 16, its walls 18 being of a single thickness and extending transversely, and at points equi-distant from the center, of said chamber, as clearly shown in Figs. 2 and 3. The top 17 of the chamber serves as a battle to deflect the mix ture downwardly through the diametrically disposed burner tubes 18, which are also formed as an integral part of the chamber. Inverted mantles, as 19, are carried by the burner tubes, and a plurality of radiating arms, as 20 are projected from the upper edge of the said chamber to serve as sup ports for a shade.

In operation the hydrocarbon is initially heated in the retort 6, and the incandescent mantles 19 are lighted. A thorough breaking up of the hydrocarbon ensues, owing to the alternate expansion and contraction, and the consequent variance in velocity which occurs first in the tube, then at the opening 8, within the nipple 9, and finally through the pin opening 10, (which elements comprise the contra venturi extremity of the retort) where in an atomized state it passes into the base of the mixing chamber andv commingles with the air entering at 15. The importance of the venturi characteristic of the mixing chamber now becomes apparent. At the base of the chamber the mixture first travels at a slow velocity. Upon reaching the throat of the venturi a more rapid velocity is imparted to the mixture, and at the top it resumes a slow ve locity. These changes in the velocity serve to produce an extremely thorough mixture, which now strikes the baflle top of the sec ondary chamber and issues through the outlets and is consumed.

What I claim is:

In a hydrocarbon lamp, the combination of a reservoir, a retort connected to said reserv ir, a hollow subst ntially oval.-

shaped chamber supported by said retort, said chamber having a central mixing tube formed integrally therewith and arranged transversely thereof, the Walls of said tube being of a single thickness and venturi shaped, the top of said Walls terminating short of the top of the chamber, the positioning of said tube centrally of the chamber thereby forming burner tubes upon opposite sides of the mixing tube between the same and the outside Walls of the chamber,

THOMAS JEFFERSON OROQK.

l/Vitnesses R. L. STEVENS, A. M. BUNN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

